修复sql错误导致程序崩溃的问题

visualdev/Tnb.VisualDev/VisualDevService.cs

@@ -175,6 +175,8 @@ public class VisualDevService : IVisualDevService, IDynamicApiController, ITrans
     public async Task<dynamic> GetFormDataFields(string id)
     {
         VisualDevEntity? templateEntity = await _visualDevRepository.AsQueryable().FirstAsync(v => v.Id == id && v.DeleteMark == null);
+        //modified by PhilPan 
+        if (templateEntity == null) throw Oops.Oh(ErrorCode.D1418, id);
         TemplateParsingBase? tInfo = new TemplateParsingBase(templateEntity); // 解析模板
         List<FieldsModel>? fieldsModels = tInfo.SingleFormData.FindAll(x => x.__vModel__.IsNotEmptyOrNull() && !JnpfKeyConst.RELATIONFORM.Equals(x.__config__.jnpfKey));
         List<VisualDevFormDataFieldsOutput>? output = fieldsModels.Select(x => new VisualDevFormDataFieldsOutput()
@@ -198,6 +200,8 @@ public class VisualDevService : IVisualDevService, IDynamicApiController, ITrans
 
         if (!string.IsNullOrWhiteSpace(input.relationField) && !string.IsNullOrWhiteSpace(input.keyword)) queryDic.Add(input.relationField, input.keyword);
         VisualDevEntity? templateEntity = await _visualDevRepository.AsQueryable().FirstAsync(v => v.Id == id && v.DeleteMark == null); // 取数据
+        //modified by PhilPan 
+        if (templateEntity == null) throw Oops.Oh(ErrorCode.D1418, id);
         TemplateParsingBase? tInfo = new TemplateParsingBase(templateEntity); // 解析模板
 
         // 指定查询字段